<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Sign in</title>
</head>
<body>
<form method="post" action="/servlet/sign-in">
    <input type="text" name="uid" placeholder="输入用户名">
    <input type="password" name="pw" placeholder="输入密码">
    <input type="submit" value="登录">
</form>
</body>
</html>